Harrow



UNrTnD STATES PATENT OFFICE.

VSAMUEL COOPER, OF YORKSHIRE CENTRE, NE'W YORK. i y

HARROW.

SPECIFICATION forming part of Letters Patent No. 382,513. dated Mayf8, 1888. l

Application filed December 7, 1887. Serial No. 257.189. (No model.)

To all whom it may concern.'

Be it known that I, SAMUEL COOPER, of Yorkshire Centre, in the county of Cattarau gus and State of New York, have invented new and useful Improvements in Harrows, ot' which the following is a specification.`

This invention relates to an improvement in spring-tooth harrows, and has the object to provide simple means for rendering the teeth adjustable, so that theycan be raised or lowered on the barrow-frame to cause the teeth to enter the soil to a greater or less depth, and so that the angle of the teeth with reference to the soil can be changed.

AThe invention consists of the improvements which will be hereinafter described, and pointed out in the claims.l

In the accompanying drawings, Figure l is a fragmentary top plan view of a harrow provided with my improvement. Fig. 2 is a sectional elevation on an enlarged scale in line w Fig. 1, showing one of the adjustments of theharrow-teeth. Fig.3is'asimilar view-shown ing another adjustment ofthe teeth. Fig. 4 is a vertical cross-section in line a: Y Fig. 2. Fig. 5 is a vertical cross-section in line y y, Fig. 2. Fig 6 is a perspective view of one of the tooth-holders. Fig. 7'is a perspective view of one of the filling-pieces.

Like letters ot' reference refer to like parts in the several figures.

A represents the diagonal bed-pieces, and A the oblique cross pieces, of the harrowralme, which are secured together by vertical B represents the harrow-teeth, and C are the tooth-holders consisting of open rectangular as may be necessary, in order to give the teeth the desiredposition. The tooth may be placed upon both end bars of the toothholder, in

which position the tooth is at itsl greatest elevation; or it it may be placed below both end bars of the tooth-holder, as represented in Fig. 3, infwhich position thev tooth is` inits lowest position; or the tooth may beplaced upon the front-end bar and below'the rear-end bar of the holder, as represented in Fig. 2, in

which position the point of the tooth stands at the most oblique angle to the surface of the soil; or the tooth may be placed below the front-end barland upon the rear-end bar, in

each other, thereby imparting greater firmness to the barrow-frame. These ribs also serve to hold the h'arrow-teeth against'lateral displacement. Y 1 f represents filling vpieces or blocks, which are preferably inserted between the end'.- barsv of the tooth-holders C and the adjacent pogrtions of the bars A A', so as to till the spaces which are not occupied by the teeth and exclude dirt from the grooves a. 'Ihe fillingpieces f are inclined or beveled to correspond to the bevel of the end bars of the toot-h-hold-4 ers, so that the filling-pieces will be held against outward movement when the toothholders are secured in place; The fillingpieces are provided' at their outer ends with lips which project over the outer edges of the end bars of the tooth-holder and prevent the iilling-pieees from 'moving inwardly. These filling-pieces also serve to support the end bars of the tooth-holders.

-The tooth-holders may be provided with bosses or enlargements around the bolt-holes c for strengthening the loops, which bosses enter recesses formed in the bars A A. Whenr the tooth-holders are applied to the upperside of the barrow-frame, they may be held in place by. caps or cross-pieces, which Vtake of the cross-bars A. p

I claim as my inventionl. The combination, with the barrow-frame and a barrow-tooth, of a tootliholder consisting of an open frame secured to the harrowframe and composed of side bars and end bars,

-whereby the tooth can be clamped against either side of the toothholder or be passed through the sarne diagonally so as to bear against opposite sides'of the end bars of the tooth-holder, substantially as set forth.

2. The combination, with the harroW-franie and a barrow-tooth, of a tooth-holder consisting of an open rectangular frame having its end bars beveled inwardly, forming inclined seats for the tooth on opposite ends of the frame, substantially as set forth. y

3. The combination, with the bars of the liarrow-franie provided in their adjacent p0rtions with grooves or depressions for the reception of the teeth, of a tooth-holder secured Witness my hand this 25th day of November, 1887.

SAMUEL COOPER. Witnesses:

CARL F. GEYER, CHESTER D. HoWE. 

